Exxon Chemical Pakistan Ltd. (1990). Annual report ... Exxon Chemical Pakistan Ltd..
Lua i Stíl Chicago (17ú heag.)Exxon Chemical Pakistan Ltd. Annual Report ... Karachi: Exxon Chemical Pakistan Ltd., 1990.
Lua MLA (8ú heag.)Exxon Chemical Pakistan Ltd. Annual Report ... Exxon Chemical Pakistan Ltd., 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.